Zainal, S, Onwudili, JA and Williams, PT (2014) Supercritical water oxidation of dioxins and furans in waste incinerator fly ash, sewage sludge and industrial soil. Environmental Technology, 35 (14). 1823 - 1830. ISSN 0959-3330
Abstract
Three environmental samples containing dioxins and furans have been oxidized in the presence of hydrogen peroxide under supercritical water oxidation conditions. The samples consisted of a waste incinerator fly ash, sewage sludge and contaminated industrial soil. The reactor system was a batch, autoclave reactor operated at temperatures between 350°C and 450°C, corresponding to pressures of ~20-33.5 MPa and with hydrogen peroxide concentrations from 0.0 to 11.25 vol%. Hydrogen peroxide concentration and temperature/pressure had a strong positive effect on the oxidation of dioxins and furans. At the highest temperatures and pressure of supercritical water oxidation of 450°C and 33.5 MPa and with 11.25 vol% of hydrogen peroxide, the destruction efficiencies of the individual polychlorinated dibenzo-ρ-dioxins/polychlorinated dibenzofurans (PCDD/PCDF) isomers were between 90% and 99%. There did not appear to be any significant differences in the PCDD/PCDF destruction efficiencies in relation to the different sample matrices of the waste incinerator fly ash, sewage sludge and contaminated industrial soil.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, Taylor and Francis. Uploaded in accordance with the publisher's self-archiving policy. This is an Accepted Manuscript of an article published in Environmental Technology on 27/02/14, available online: http://www.tandfonline.com/10.1080/09593330.2014.884170 |
Keywords: | supercritical water oxidation; dioxin; PCDD; fly ash; sewage sludge; soil |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 Oct 2014 13:28 |
Last Modified: | 21 Apr 2015 09:15 |
Published Version: | http://dx.doi.org/10.1080/09593330.2014.884170 |
Status: | Published |
Publisher: | Taylor & Francis |
Identification Number: | 10.1080/09593330.2014.884170 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80747 |